08-01-2019, 04:26 PM
My 12.7 runs great with a standard carbine weight buffer. I would do your research and ensure the gas port is properly sized. Grendel runs great in my GB faxon with no special parts, no AGB, no special spring.
Nothing kills the incentive of men faster than a healthy sense of entitlement. Nothing kills entitlement faster than a healthy sense of achievement.

